JP2017224186A - Security system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a security system which can easily and individually apply precise passage authority of a visitor when the visitor enters.SOLUTION: A security system comprises: a face front side collation part 25 which collates information of a visitor, with information registered in a face collation database 21, to a visitor who is going to enter a facility, for authenticating propriety of entry of the visitor; and a passage authority data distribution part 28 for distributing passage authority data for regulating propriety of passage of each place in the facility for the visitor who is permitted to enter, by the face front side collation part 25, for allowing each authentication device on a distribution destination of the passage authority data, to authenticate propriety of passage of the visitor, who is permitted to enter based on the passage authority data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a security system.

  Patent Document 1 discloses a face authentication device that passes an entrance / exit gate by authenticating a photographed pedestrian's face. When there are a plurality of persons at the time of registering the dictionary information, this face authentication apparatus can register only appropriate persons by causing the clerk to visually select registration objects.

JP 2007-272811 A

As a facility to which the security system is applied, there is a facility that requires an individual to be authenticated when the visitor enters each room in the facility. For example, in a facility shared by multiple companies such as a data center, reception is given at the entrance of the facility, and permission to pass is granted so as not to enter a company room (server in the room) different from the affiliation of the visitors There is a need to. However, it takes time to set detailed traffic authority at the reception desk, such as which visitors are allowed to pass through which route in the facility.
Patent Document 1 describes that when a person can be identified using a camera, a right to pass around the camera is given. However, it has not been provided in conventional authentication apparatuses such as Patent Document 1 to grant detailed traffic authority including the destination from the specific place for each identified individual.

  In view of this, the main object of the present invention is to provide a security system that can easily give detailed traffic authority of a visitor individually at the time of entrance.

In order to solve the above problems, the security system of the present invention has the following configuration.
In other words, the security system verifies the admission of a visitor who is going to enter the facility by comparing the information of the visitor with information registered in the database in advance. An authentication unit;
Distributing to the authentication device the passage authority data that defines whether or not each place in the facility is permitted to enter the entrance permitted by the entrance authentication unit, so that each authentication device at the distribution destination has the passage authority. And a passage authority data distribution unit that makes it possible to authenticate whether or not the visitor permitted to enter based on data can pass.
Other means will be described later.

  ADVANTAGE OF THE INVENTION According to this invention, the security system which can give a detailed traffic authority of a visitor individually easily at the time of entrance can be provided.

It is a block diagram of the security system regarding one Embodiment of this invention. It is a block diagram of the security system of another form different from FIG. 1 regarding one Embodiment of this invention. It is a flowchart which shows the pre-processing for performing the face authentication smoothly regarding one Embodiment of this invention. FIG. 4 is a flowchart when reception is permitted by a face authentication following FIG. 3 relating to an embodiment of the present invention. It is an example of an image display in the process of FIG. 3 regarding one Embodiment of this invention. It is an example of an image display in the process of FIG. 3 regarding one Embodiment of this invention. FIG. 5 is an image display example during the processing of FIG. 4 according to an embodiment of the present invention. FIG. It is an example of the face collation database regarding one Embodiment of this invention. It is an example of the traffic authority database regarding one Embodiment of this invention. It is a top view which shows the passage route of each visitor based on the content of the passage authority database of FIG. 9 regarding one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration diagram of a security system. The security system is applied, for example, to a facility (such as a data center) in which the authority to enter and leave a room in a building is defined for each visitor. That is, the passer-by passes through the first authentication (entrance authentication) for entering the building through the reception and the second authentication (entry authentication) for entering the room in the building after entering. There is a need.
The security system includes an entrance / exit management server 2, an entrance / exit control terminal 3, a camera 7, and a reception terminal 8.

The camera 7 photographs a visitor who comes to the reception and provides the captured image to the entrance / exit management server 2.
The entrance / exit management server 2 specifies a personal ID for each visitor photographed in the photographed image, and provides support for allowing the acceptor to determine whether or not each visitor can enter. Then, the entrance / exit management server 2 distributes the passage authority data of authorized visitors to each entrance / exit control terminal 3.

The reception terminal 8 is a terminal used by the receptionist to determine whether or not each visitor can enter based on a display screen provided from the entrance / exit management server 2.
Although the passage authority data will be described in detail with reference to FIG. 9, it is data used for second authentication (room authentication). For example, when finger authentication is used as the second authentication, the passage authority data is finger vein data. Further, as the second authentication (entry authentication), a simple configuration in which the name of the visitor is input and the door may be passed is also possible. At that time, the traffic authority data is the name data of the visitors.

  The entrance / exit control terminal 3 is a terminal that controls an authentication device (FIG. 10) installed in each door. The authentication device authenticates the entrance of the visitor based on the traffic authority data distributed from the entrance / exit control terminal 3. When the entrance authentication is successful, the door close to the authentication device is unlocked from the entrance / exit control terminal 3 so that the visitors can pass. If it cannot pass, it will remain locked and visitors will not be able to enter the room.

The entrance / exit management server 2 includes a face matching database 21, a face front matching unit 25, a traffic authority data distribution unit 28, and a traffic authority database 29.
The reception terminal 8 includes a human region detection unit 22, a face region extraction unit 23, a face front determination unit 24, a display control unit 26, a reception output unit 27A, a reception input unit 81, and a reception image. The display unit 82 and the reception audio output unit 83 are included.

The human region detection unit 22 detects whether or not a person is present in the captured image of the camera 7, and the region (human region) in which the person is captured in the captured image is detected as a result of the detection. Notify
The face area extraction unit 23 extracts an area (face area) in which a recognizable face is captured from a human area in the captured image.
The face front determination unit 24 detects whether or not the face extracted by the face region extraction unit 23 faces the front so that appropriate authentication can be performed. Furthermore, the face front determination unit 24 also detects whether there is a factor that inhibits face extraction such as a hat or sunglasses in the face area.
The face front collation unit 25 performs collation with each collation data registered in the face collation database 21 (details are shown in FIG. 8) for the face area that the face front determination unit 24 determines to be a front face image. The individual ID of each visitor in the photographed image of the camera 7 is specified. That is, the face front matching unit 25 performs first authentication (admission authentication).

The reception input unit 81 causes the reception person to select each visitor in the captured image of the camera 7 via a touch panel or the like. Then, the reception output unit 27A outputs detailed data and the like of each selected visitor to the reception image display unit 82 (image format) and the reception audio output unit 83 (audio format). In addition, the reception input unit 81 receives, from the receptionist, a determination as to whether or not each of the selected visitors can finally enter.
The display control unit 26 stores information on calculation processes and calculation results of each processing unit (human region detection unit 22, face region extraction unit 23, face front determination unit 24, face front collation unit 25) of the captured image of the camera 7. The image is combined with the photographed image of the camera 7 and output to the reception output unit 27A.

  The passage authority data distribution unit 28 inputs the passage authority data about the visitor when the visitor specified by the face front matching unit 25 obtains the entry permission from the receptionist via the reception input unit 81. Delivered to the exit control terminal 3. This traffic authority data is registered in advance in the traffic authority database 29 (details are shown in FIG. 9). As a result, the entrance / exit control terminal 3 allows the visitors to go only to the permitted place.

FIG. 2 is a configuration diagram of a security system different from FIG. The form of FIG. 2 provides basically the same function as the form of FIG. 1, but the apparatus configuration for that is different.
That is, in FIG. 2, the reception terminal 8 of FIG. 1 and the newly provided entrance terminal 9 have input / output interfaces (a reception input unit 81, an entry input unit 91, a reception image display unit 82, A simple configuration including only an image display unit for admission 92, an audio output unit for reception 83, and an audio output unit for entrance 93). The entrance output unit 27B basically outputs the same data as the reception output unit 27A to the entrance terminal 9. However, although the admission output unit 27B outputs information informing the attendee such as an announcement such as “Please take sunglasses”, it is necessary for the receptionist such as “Attendee A belongs to company P”. Information that is not notified to visitors is not output.

On the other hand, the image processing units (human region detection unit 22, face region extraction unit 23, face front determination unit 24, etc.) provided in the reception terminal 8 of FIG. 1 are integrated into the entrance / exit management server 2 in FIG. .
As described above, the configuration of the reception terminal 8 and the entrance terminal 9 is small in the form of FIG. 2, so that although there are few visitors per reception port, it is suitable for facilities having a large number of reception ports.
Moreover, in the form of FIG. 1, since the reception terminal 8 functions as an image processing apparatus, it is suitable for facilities having many visitors per reception port.

1 and 2 is configured as a computer having a CPU (Central Processing Unit), a memory, storage means (storage unit) such as a hard disk, and a network interface.
In this computer, the CPU executes a program (also referred to as an application or its abbreviated application) read on the memory, thereby operating a control unit (control means) configured by each processing unit.

FIG. 3 is a flowchart showing pre-processing for smoothly performing face authentication. The operation starts after the reception starts.
As S <b> 101, the camera 7 captures an image and sets the captured image as a subsequent processing target.
In S102, the human area detection unit 22 determines whether or not a human area in which a person is captured can be detected from the captured image. If Yes in S102 (if a human area can be detected), the process proceeds to S103, and if No, the process proceeds to S112.
As S112, the entrance output unit 27B outputs the announcement “Stand in front of the camera” to guide the entire body of the visitor to be captured in the next photographed image.

In step S <b> 103, the face area extraction unit 23 determines whether a recognizable face area has been extracted from the human area of the captured image. If Yes in S103 (if a face area has been extracted), the process proceeds to S104, and if No, the process proceeds to S113.
In S113, the entrance output unit 27B outputs an announcement “Please turn to the camera” to guide the attendee's face so that it appears in the next photographed image.
As S <b> 104, the face front determination unit 24 determines whether or not the face direction is front from the face area of the photographed image. If Yes in S104 (if the face direction is front), the process proceeds to S105, and if No, the process proceeds to S114.

In S114, the admission output unit 27B outputs an announcement “Please turn to the front” to guide the face facing the front of the entrant to appear in the next photographed image. The image processing for the face area in S103 and S104 may be determined based on, for example, the extraction of human face parts such as eyes and mouth and the positional relationship between the parts. For example, if only one eye is extracted, the human face is sideways, so the announcement in S114 may be output.
As S <b> 105, the face front collation unit 25 retrieves a corresponding individual from the face collation database 21 using the face image shown in the face area of the photographed image as a search key.

FIG. 4 is a flowchart when the admission is permitted by the face authentication, following FIG.
As S201, the face front collation unit 25 determines whether personal data corresponding to the face image exists and personal authentication has succeeded as a result of the search process of S105. If Yes in S201 (if authentication is successful), the process proceeds to S202. If No, the process proceeds to S212.
In S212, the entrance output unit 27B outputs an announcement “The face of the visitor is unregistered”, thereby notifying the attendee of a response such as prompting a new registration.
As S202, the reception image display unit 82 displays the personal information (simple person information) of the visitors who succeeded in personal authentication in S201. Thereby, the receptionist can grasp which visitors are registered in the face matching database 21.

Hereinafter, S203 to S214 are final confirmation of the visitors by the receptionist. Although this final confirmation (personal confirmation) increases the security strength, it takes an authentication time and may be omitted as appropriate.
In S203, the reception input unit 81 determines whether or not the person displayed in S202 has been selected by a touch panel operation of the reception person. If Yes in S203 (if the selected person exists), the process proceeds to S213, and if No, the process proceeds to S204.
As S213, the reception image display unit 82 displays the detailed information of the person selected in S203.
In S204, the reception input unit 81 confirms the selection (final confirmation of admission permission) by the receptionist for the person selected in S203 or the person who succeeded in the face matching shown in the photographed image. It is determined whether or not. If Yes in S204, the process proceeds to S205, and if No, the process proceeds to S214.
As S214, the reception image display unit 82 has become unable to enter by outputting the announcement "The face of the visitor is registered but cannot be entered due to another reason (non-payment of usage fees, etc.)" Inform the visitors of another reason.

In S <b> 205, the passage authority data distribution unit 28 acquires the passage authority data for the permitted visitors from the passage authority database 29. The face matching database 21 and the traffic authority database 29 are associated with each other with the same key (personal ID).
As S <b> 206, the traffic authority data distribution unit 28 distributes the traffic authority data acquired in S <b> 205 to each entrance / exit control terminal 3. Upon completion of this distribution, reception is also terminated.

FIG. 5 is an example of image display during the process of FIG.
In the image display 101, the three visitors 110, 120, and 130 photographed in S101 are photographed.
In the image display 102, the result of the person detection from the image display 101 in S102 is additionally displayed as a frame of each image area. The human area detection unit 22 detects the image area 111 of the visitor 110, detects the image area 121 of the visitor 120, and detects the image area 131 of the visitor 130.

FIG. 6 is an example of image display during the process of FIG.
In the image display 103, the result of extracting the human face from the image display 102 in S103 is additionally displayed as a frame of each image area. The face area extraction unit 23 detects a face area 112 from the image area 111, detects a face area 122 from the image area 121, and detects a face area 132 from the image area 131.

  In the image display 104, the determination result of the face front determination unit 24 from the image display 103 (announcement of attention when not in front of the face) is additionally displayed as a balloon around each person in S114. The face front determination unit 24 has a note 113 “Please turn to the front” as the determination result of the face area 112, a note 123 “Please take off the hat” as a determination result of the face area 122, and the face area 132. Each of the attendees is cautioned individually by displaying the notice 133 “Please remove sunglasses”, which is the result of the determination, on the screen or by outputting a voice.

  Visitors act so that they can easily recognize their faces by the announcement of these cautions. Thereby, smooth authentication can be performed. Note that the announcement in FIG. 7 is merely an example, and other announcements such as “Please do not change facial expressions such as laughing and make yourself face straight” or “Please remove the mask” may be given to the visitors. It should be noted that a face wearing item such as black sunglasses or a white mask is greatly different from the skin color of the face, and can be detected by extracting a color region.

FIG. 7 is an image display example during the processing of FIG.
The image display 105 is an example of a display screen of personal information (simple person information) in S202. Personal information such as a company name and name registered in the face matching database 21 (FIG. 8) is displayed in association with each visitor. The face front collation unit 25 displays the search result of the face collation database 21 using the face image of the face area 112 of FIG. Similarly, the face front collation unit 25 displays the search result of the face collation database 21 using the face image of the face area 122 of FIG.

On the other hand, since the face image of the face area 132 in FIG. 6 has not been registered in the face collation database 21, the face front collation unit 25 indicates “????” indicating that “the face is not registered” in S212. Is displayed.
In this way, the receptionist can confirm information on a plurality of visitors in the captured image at a time on the screen. Therefore, since the admission permission of the visitors can be determined earlier than the individual authentication of the visitors, the burden on the receptionist can be reduced.

The image display 106 is an example of a screen that displays detailed information of the person selected in S213. The left column 106 a of the image display 106 is a display example of a photographed image of the camera 7 as in the other image displays 101 to 105. The right column 106b of the image display 106 is a place where the detailed information of the person selected from the left column 106a is displayed.
A frame 115 in the left column 106a indicates that the reception input unit 81 has selected the attendee 110 from a touch operation on the touch panel in S203.

In the right column 106b, in addition to the registration information (company name, name, personal ID) of the face matching database 21 for the selected visitor 110, registration information (accessible door) of the passage authority database 29 (FIG. 9) is displayed. Is displayed. In addition, the right column 106b also includes an input button for personal selection confirmation information input in S204 (that is, whether or not to allow the visitor 110 to be accepted).
As described above, the receptionist can confirm the identity more reliably by referring to the detailed information about the visitor 110 displayed in the right column 106b. In addition, even if multiple visitors are photographed on a single photographed image, this time it is possible to select which visitors will be accepted in this order by touch operation, etc., so that the acceptor will surely accept all visitors Can do.

  FIG. 8 is an example of the face matching database 21. The face collation database 21 associates the individual ID, name, company name, and face collation data for the face collation database 21 to collate with the face image for each visitor permitted to accept. Furthermore, in the face matching database 21, not only visitors who are allowed to accept, but also visitors who are not allowed to accept (nuisance persons) may be registered. The face matching data may be the face image itself or each feature amount extracted from the face image (skin color, position of parts such as eyes, hairstyle, etc.).

FIG. 9 is an example of the traffic authority database 29. For each personal ID registered in the face matching database 21, the passage authority database 29 includes authentication data for entering and leaving the room, the type of passage for the door (whether it enters the door or exits the door), and for each door. It stores detailed data that defines the passage of visitors such as entry / exit authority. A specific visitor traffic control process using the detailed data will be described later with reference to FIG.
Note that a door (door A or the like) that is permitted with the type “on” and (permitted) with the type “out” has the same permission when entering and leaving the room (that is, not one-way). On the other hand, a door (door C or the like) that is permitted by the type “on” and not permitted by the type “out” is a one-way door.

The authentication data in the passage authority database 29 is, for example, registration data for finger vein authentication. Basically, the face matching data in the face matching database 21 is used for the first authentication (entrance authentication), and the finger vein authentication data in the passage authority database 29 is used for the second authentication (room authentication).
However, the type of authentication data at each stage of the first authentication and the second authentication is not limited to this example. For example, finger vein authentication data is used for the first authentication, and face matching data is used for the second authentication. It may be used. Further, when the authentication with the face matching data fails in the first authentication, the first authentication may be successful when the authentication using the finger vein authentication data is successful as the complementary processing. Further, password authentication or the like may be used as a complementary process.

  The registration contents of the face collation database 21 and the traffic authority database 29 described above are premised on, for example, being registered in advance by an administrator or the like using a personal ID as a key. The contents of these databases are reflected in security (door open / close control), so that each attendee can individually specify which rooms each visitor can enter and what rooms should not be entered. The burden of attention can be reduced.

FIG. 10 is a plan view showing the passage route of each visitor based on the contents of the passage authority database 29 of FIG.
A visitor with personal ID “h_hitachi” (“H” in FIG. 10), a visitor with personal ID “t_sangyo” (“t” in FIG. 10), and a personal ID “j_seigyo” (control) Jiro) ”'s visitors (“ j ”in FIG. 10) have different paths that can be passed.
The door A in the plan view is a shared part, and every visitor passes first. Therefore, all three persons who have been permitted by the receptionist are permitted to enter the room.

  Assume that the personal ID “h_hitachi (Hanako Hitachi)” is permitted to enter the door B only. In the passage authority database 29, only door A and door B are permitted to enter the room, and all others are prohibited. Access authority data is distributed from the entrance / exit control terminal 3 so that Hitachi Hanako can perform finger authentication (finger vein data in the access authority database 29) with an authentication device near the door B. When the finger authentication is successful, an instruction to open the door B is transmitted from the entrance / exit control terminal 3.

  The personal ID “t_sangyo (Taro Sangyo)” is an example in the case where door C and door D are allowed to enter and exit the room, but entry is made through door C and exit from door D is forced. Therefore, the passage authority data 29 is set in the passage authority database 29 so that authentication is required on both the entrance side and the exit side of the door, and authentication of only one side is permitted. As a result, the passage route can be forced to enter from the door C and exit from the door D.

  The personal ID “j_seigyo (Control Jiro)” is an example in which the door E and the door F are allowed to enter and exit the room, but the accessible area is changed depending on the time zone. Therefore, in the passage authority database 29, a time zone during which entry is allowed when entering the room is designated for each door. Thereby, the place which can pass can be changed in a time slot | zone. In addition to the example illustrated in the passage authority database 29, the validity period (passage authority) of the room authentication may be set in the passage authority data, such as “two hours from the time of entrance uniformly”.

When the doors other than the door C and the door D leave the room, there is no authentication terminal, so the room can be left without authentication. This is because entry to the room is normally restricted and it is not necessary to authenticate again when leaving the room (because it can be authenticated even when leaving the room, but it is less effective for the cost), leaving the room without authentication is permitted. .
When leaving, the face authentication is performed by the camera in the reception room, and a deletion signal of the personal passage authority data specified for each entry / exit control terminal 3 is sent from the entry / exit control terminal 3 to each authentication device. Deliver to.

As the first feature of the present embodiment described above, the first authentication for entering the building via the reception for the facility where the authority to enter and exit the room in the building is defined for each visitor ( A security system is shown that allows each person to pass through the second authentication (entrance authentication) for entering the room in the building after entering the building. In this security system, when the entrance / exit management server 2 succeeds in the entrance authentication, the passage authority data is distributed to each authentication device that performs the entrance authentication via the entrance / exit control terminal 3.
Thereby, even a visitor who has succeeded in the entrance authentication can prevent unauthorized entry into a room that is not permitted. Therefore, it is possible to prevent intrusion into a room (a server in the room) of a company different from the visitors at a facility shared by a plurality of companies such as a data center.

Further, in the comparative example in which only the authentication device is provided at the individual door and the entrance authentication of the entrance / exit management server 2 is not used, it is necessary to prepare all personal data for authentication. Therefore, the authentication processing load of the authentication device is increased, and a large-capacity storage device is also required.
However, in this embodiment, the entrance authentication of the entrance / exit management server 2 is used, and the authentication device is provided in an individual door. The authentication process is appropriately divided so that it is specified in detail. Further, it is not necessary for the authentication device to store authentication data for all passers-by in advance, and only the necessary amount is distributed from the pass authority database 29 as pass authority data when necessary. Thereby, the load of the authentication device is reduced, and many authentication devices can be introduced at low cost.

As a second feature of the present embodiment, in the face authentication process used for the first authentication (admission authentication), as exemplified in the image display 104 of FIG. An appropriate announcement was announced. By prompting the attendees to pay attention in this way, it is possible to easily acquire “a face image in a state where the wearer that hides the face is removed and the front is facing”, which is suitable for face authentication input.
On the other hand, in the method of Patent Document 1, since a confirmation screen for an attendant (recipient) is not provided when there are a plurality of visitors, it is often the case that the person who is the subject is not aware that face authentication is being performed. In many cases, the authentication error rate becomes high or takes time.

In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit.
Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor.

Information such as programs, tables, and files for realizing each function is stored in memory, a hard disk, a recording device such as an SSD (Solid State Drive), an IC (Integrated Circuit) card, an SD card, a DVD (Digital Versatile Disc), etc. Can be placed on any recording medium.
Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.
Furthermore, the communication means for connecting the devices is not limited to the wireless LAN, but may be changed to a wired LAN or other communication means.

DESCRIPTION OF SYMBOLS 1 Process management apparatus 2 Entrance / exit management server 3 Entrance / exit control terminal 7 Camera 8 Reception terminal 9 Entrance terminal 21 Face collation database 22 Human area detection part 23 Face area extraction part 24 Face front judgment part 25 Face front collation part 26 Display Control section 27A Reception output section 27B Entrance output section 28 Traffic authority data distribution section 29 Traffic authority database 81 Reception input section 82 Reception image display section 83 Reception voice output section 91 Entrance input section 92 Entrance image display section 93 Audio output for admission

Claims (5)

An admission authentication unit that authenticates whether or not the admission of the visitor can be confirmed by comparing the information of the visitor with information registered in advance in the database for the visitor who intends to enter the facility,
Distributing to the authentication device the passage authority data that defines whether or not each place in the facility is permitted to enter the entrance permitted by the entrance authentication unit, so that each authentication device at the distribution destination has the passage authority. And a passage authority data distribution unit that makes it possible to authenticate whether or not the visitor permitted to enter based on data can pass. The admission authentication unit uses a photographed image of the camera as information of the visitor for authenticating admission permission, and when the person is not reflected in the photographed image, the admission person moves to the photographing range of the camera. The security system according to claim 1, wherein the security system is announced. The admission authentication unit uses a photographed image of the camera as information on the visitor for authenticating admission permission, and when the face area of the person cannot be extracted from an area in which the person is reflected in the photographed image, the camera The security system according to claim 1, wherein an announcement is made to the attendant so that a face area is captured in the shooting range. The admission authentication unit uses a photographed image of the camera as information on the visitor for authenticating admission, and when the face of a person shown in the face area in the photographed image is not facing the front of the camera The security system according to claim 1, wherein the attendant is announced so as to face the front of the camera. The admission authentication unit uses a photographed image of the camera as the information of the visitor for authenticating admission, and when the wearing object is reflected in the face area in the photographed image, the wearing article is removed. The security system according to claim 1, wherein an announcement is made to a visitor.

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